Leinster Rugby have confirmed that they will hold an internal enquiry into Brian Mujati's claim that he was racially abused during Northampton Saints' friendly victory over the province on Friday night.

Writing on his Twitter account on Saturday morning, Mujati alleged that Leinster duo Steven Sykes and Heinke van der Merwe had repeatedly called him "a baboon" during scrums.

The South African prop said of his compatriots: "I was shocked by how blatant they were being and to think I actually thought I knew Heinke from back in the Lions days.

"The guy then tries to shake my hand after the game. Naturally I kindly told him to **** off. I wish them all the best with their careers."

Leinster issued the following statement later in the day: "Following allegations made by a Northampton Saints player this morning via his personal Twitter account, Leinster Rugby are holding a full internal investigation.

"The managements of both teams are in close communication and hopefully the matter will be resolved as soon as possible. No further comment will be made at this time until that resolution has been reached."